code: def float_layer(savefile="float_layer.png"):
      drawer = MPLDrawer(2, 2)
  
      drawer.box_gate(
          layer=0.5, wires=0, text="Big Gate", extra_width=0.5
      )
      drawer.box_gate(layer=0, wires=1, text="X")
      drawer.box_gate(layer=1, wires=1, text="Y")
  
      plt.savefig(folder / savefile)
      plt.close()
  
file_path: pennylane/doc/_static/drawer/mpldrawer_examples.py
imports: import pathlib
  import matplotlib.pyplot
  from pennylane.drawer import MPLDrawer
  from pennylane.drawer.style import _set_style
label_desc: Use image node_id 14 for calling a global function with example usage: float_layer(savefile) without return types